staging: unisys: remove unneeded functions

these functions are not being used anywhere.so we can remove them.
has been verified by "git grep" that they are not being referenced
anywhere also has been build tested.
Signed-off-by: Sudip Mukherjee <sudip@vectorindia.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>

drivers/staging/unisys/include/uisutils.h

@@ -65,17 +65,7 @@ struct req_handler_info {
 	struct list_head list_link;	/* links into ReqHandlerInfo_list */
 };
 
-struct req_handler_info *req_handler_add(uuid_le switch_uuid,
-				const char *switch_type_name,
-				int (*controlfunc)(struct io_msgs *),
-				unsigned long min_channel_bytes,
-				int (*svr_channel_ok)(unsigned long
-							 channel_bytes),
-				int (*svr_channel_init)(void *x,
-						unsigned char *client_str,
-						u32 client_str_len, u64 bytes));
 struct req_handler_info *req_handler_find(uuid_le switch_uuid);
-int req_handler_del(uuid_le switch_uuid);
 
 #define uislib_ioremap_cache(addr, size) \
 	dbg_ioremap_cache(addr, size, __FILE__, __LINE__)
@@ -115,19 +105,7 @@ int uisutil_add_proc_line_ex(int *total, char **buffer, int *buffer_remaining,
 
 int uisctrl_register_req_handler(int type, void *fptr,
 			struct ultra_vbus_deviceinfo *chipset_driver_info);
-int uisctrl_register_req_handler_ex(uuid_le switch_guid,
-			const char *switch_type_name,
-			int (*fptr)(struct io_msgs *),
-			unsigned long min_channel_bytes,
-			int (*svr_channel_ok)(unsigned long
-					      channel_bytes),
-			int (*svr_channel_init)(void *x,
-						unsigned char *client_str,
-						u32 client_str_len,
-						u64 bytes),
-			struct ultra_vbus_deviceinfo *chipset_driver_info);
 
-int uisctrl_unregister_req_handler_ex(uuid_le switch_uuid);
 unsigned char *util_map_virt(struct phys_info *sg);
 void util_unmap_virt(struct phys_info *sg);
 unsigned char *util_map_virt_atomic(struct phys_info *sg);
@@ -212,15 +190,6 @@ wait_for_valid_guid(uuid_le __iomem *guid)
 	LOGERR("OK... GUID is non-0 now\n");
 }
 
-/* CopyFragsInfoFromSkb returns the number of entries added to frags array
- * Returns -1 on failure.
- */
-unsigned int uisutil_copy_fragsinfo_from_skb(unsigned char *calling_ctx,
-					     void *skb_in,
-					     unsigned int firstfraglen,
-					     unsigned int frags_max,
-					     struct phys_info frags[]);
-
 static inline unsigned int
 issue_vmcall_io_controlvm_addr(u64 *control_addr, u32 *control_bytes)
 {

drivers/staging/unisys/uislib/uisutils.c

@@ -102,71 +102,6 @@ uisctrl_register_req_handler(int type, void *fptr,
 }
 EXPORT_SYMBOL_GPL(uisctrl_register_req_handler);
 
-int
-uisctrl_register_req_handler_ex(uuid_le switch_uuid,
-			const char *switch_type_name,
-			int (*controlfunc)(struct io_msgs *),
-			unsigned long min_channel_bytes,
-			int (*server_channel_ok)(unsigned long channel_bytes),
-			int (*server_channel_init)(void *x,
-						unsigned char *client_str,
-						u32 client_str_len, u64 bytes),
-			struct ultra_vbus_deviceinfo *chipset_driver_info)
-{
-	struct req_handler_info *req_handler;
-
-	LOGINF("type=%pUL, controlfunc=0x%p.\n",
-	       &switch_uuid, controlfunc);
-	if (!controlfunc) {
-		LOGERR("%pUL: controlfunc must be supplied\n", &switch_uuid);
-		return 0;
-	}
-	if (!server_channel_ok) {
-		LOGERR("%pUL: Server_Channel_Ok must be supplied\n",
-				&switch_uuid);
-		return 0;
-	}
-	if (!server_channel_init) {
-		LOGERR("%pUL: Server_Channel_Init must be supplied\n",
-				&switch_uuid);
-		return 0;
-	}
-	req_handler = req_handler_add(switch_uuid,
-				      switch_type_name,
-				      controlfunc,
-				      min_channel_bytes,
-				      server_channel_ok, server_channel_init);
-	if (!req_handler) {
-		LOGERR("failed to add %pUL to server list\n", &switch_uuid);
-		return 0;
-	}
-
-	atomic_inc(&uisutils_registered_services);
-	if (chipset_driver_info) {
-		bus_device_info_init(chipset_driver_info, "chipset",
-				     "uislib", VERSION, NULL);
-		return 1;
-	}
-
-	LOGERR("failed to register type %pUL.\n", &switch_uuid);
-	return 0;
-}
-EXPORT_SYMBOL_GPL(uisctrl_register_req_handler_ex);
-
-int
-uisctrl_unregister_req_handler_ex(uuid_le switch_uuid)
-{
-	LOGINF("type=%pUL.\n", &switch_uuid);
-	if (req_handler_del(switch_uuid) < 0) {
-		LOGERR("failed to remove %pUL from server list\n",
-		       &switch_uuid);
-		return 0;
-	}
-	atomic_dec(&uisutils_registered_services);
-	return 1;
-}
-EXPORT_SYMBOL_GPL(uisctrl_unregister_req_handler_ex);
-
 /*
  * unsigned int uisutil_copy_fragsinfo_from_skb(unsigned char *calling_ctx,
  *					     void *skb_in,
@@ -185,116 +120,10 @@ EXPORT_SYMBOL_GPL(uisctrl_unregister_req_handler_ex);
  *					    return value indicates number of
  *					    entries filled in frags
  */
-unsigned int
-uisutil_copy_fragsinfo_from_skb(unsigned char *calling_ctx, void *skb_in,
-				unsigned int firstfraglen,
-				unsigned int frags_max,
-				struct phys_info frags[])
-{
-	unsigned int count = 0, ii, size, offset = 0, numfrags;
-	struct sk_buff *skb = skb_in;
-
-	numfrags = skb_shinfo(skb)->nr_frags;
-
-	while (firstfraglen) {
-		if (count == frags_max) {
-			LOGERR("%s frags array too small: max:%d count:%d\n",
-			       calling_ctx, frags_max, count);
-			return -1;	/* failure */
-		}
-		frags[count].pi_pfn =
-		    page_to_pfn(virt_to_page(skb->data + offset));
-		frags[count].pi_off =
-		    (unsigned long)(skb->data + offset) & PI_PAGE_MASK;
-		size =
-		    min(firstfraglen,
-			(unsigned int)(PI_PAGE_SIZE - frags[count].pi_off));
-		/* can take smallest of firstfraglen(what's left) OR
-		* bytes left in the page
-		*/
-		frags[count].pi_len = size;
-		firstfraglen -= size;
-		offset += size;
-		count++;
-	}
-	if (!numfrags)
-		goto dolist;
-
-	if ((count + numfrags) > frags_max) {
-		LOGERR("**** FAILED %s frags array too small: max:%d count+nr_frags:%d\n",
-		       calling_ctx, frags_max, count + numfrags);
-		return -1;	/* failure */
-	}
-
-	for (ii = 0; ii < numfrags; ii++) {
-		count = add_physinfo_entries(page_to_pfn(
-				skb_frag_page(&skb_shinfo(skb)->frags[ii])),
-					skb_shinfo(skb)->frags[ii].
-					page_offset,
-					skb_shinfo(skb)->frags[ii].
-					size, count, frags_max,
-					frags);
-		if (count == 0) {
-			LOGERR("**** FAILED to add physinfo entries\n");
-			return -1;	/* failure */
-		}
-	}
-
-dolist: if (skb_shinfo(skb)->frag_list) {
-		struct sk_buff *skbinlist;
-		int c;
-
-		for (skbinlist = skb_shinfo(skb)->frag_list; skbinlist;
-		     skbinlist = skbinlist->next) {
-			c = uisutil_copy_fragsinfo_from_skb("recursive",
-				skbinlist,
-				skbinlist->len - skbinlist->data_len,
-				frags_max - count,
-				&frags[count]);
-			if (c == -1) {
-				LOGERR("**** FAILED recursive call failed\n");
-				return -1;
-			}
-			count += c;
-		}
-	}
-	return count;
-}
-EXPORT_SYMBOL_GPL(uisutil_copy_fragsinfo_from_skb);
 
 static LIST_HEAD(req_handler_info_list); /* list of struct req_handler_info */
 static DEFINE_SPINLOCK(req_handler_info_list_lock);
 
-struct req_handler_info *
-req_handler_add(uuid_le switch_uuid,
-	      const char *switch_type_name,
-	      int (*controlfunc)(struct io_msgs *),
-	      unsigned long min_channel_bytes,
-	      int (*server_channel_ok)(unsigned long channel_bytes),
-	      int (*server_channel_init)
-	       (void *x, unsigned char *clientstr, u32 clientstr_len,
-		u64 bytes))
-{
-	struct req_handler_info *rc = NULL;
-
-	rc = kzalloc(sizeof(*rc), GFP_ATOMIC);
-	if (!rc)
-		return NULL;
-	rc->switch_uuid = switch_uuid;
-	rc->controlfunc = controlfunc;
-	rc->min_channel_bytes = min_channel_bytes;
-	rc->server_channel_ok = server_channel_ok;
-	rc->server_channel_init = server_channel_init;
-	if (switch_type_name)
-		strncpy(rc->switch_type_name, switch_type_name,
-			sizeof(rc->switch_type_name) - 1);
-	spin_lock(&req_handler_info_list_lock);
-	list_add_tail(&rc->list_link, &req_handler_info_list);
-	spin_unlock(&req_handler_info_list_lock);
-
-	return rc;
-}
-
 struct req_handler_info *
 req_handler_find(uuid_le switch_uuid)
 {
@@ -312,23 +141,3 @@ req_handler_find(uuid_le switch_uuid)
 	spin_unlock(&req_handler_info_list_lock);
 	return NULL;
 }
-
-int
-req_handler_del(uuid_le switch_uuid)
-{
-	struct list_head *lelt, *tmp;
-	struct req_handler_info *entry = NULL;
-	int rc = -1;
-
-	spin_lock(&req_handler_info_list_lock);
-	list_for_each_safe(lelt, tmp, &req_handler_info_list) {
-		entry = list_entry(lelt, struct req_handler_info, list_link);
-		if (uuid_le_cmp(entry->switch_uuid, switch_uuid) == 0) {
-			list_del(lelt);
-			kfree(entry);
-			rc++;
-		}
-	}
-	spin_unlock(&req_handler_info_list_lock);
-	return rc;
-}